FN is the abbreviation for Fabrique Nationale Arms Co. of Herstal, Belgium. They made most of the A-5 shotguns and Superposed shotguns for Browning USA.
FN
Your Browning sweet sixteen shotgun was made by FN of belguim for Browning in the year 1951.
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Your browning auto-5 shotgun was made by FN of belguim for browning in 1957.
Your browning sweet sixteen shotgun was made by FN in belguim for browning in 1960.
If your browning 16ga shotgun is a auto-5 then it was made by FN of belguim for browning in 1927.
Your sweet sixteen browning auto-5 shotgun was made by FN for browning in 1963.
With the serial number that you provided,your Browning auto-5 12 gauge shotgun was made by FN of Belguim for Browning in 1947.
Your browning auto-5 shotgun was made by FN of belguim for browning in 1947.That makes your shotgun 64 Years old.
Your browning model auto-5 shotgun was made by FN for browning in 1949.
Your browning sixteen gauge shotgun was made by FN for browning in 1949.
Your browning 16ga shotgun was made by FN of belguim for browning in 1938.